Debt - Additional Information (Detail) (USD $)	1 Months Ended	3 Months Ended				1 Months Ended			1 Months Ended	3 Months Ended	12 Months Ended		1 Months Ended
	Nov. 30, 2010	Mar. 31, 2012	Mar. 31, 2011	Jul. 13, 2011	Nov. 23, 2010	Jul. 31, 2011 Credit Agreement	Mar. 31, 2012 Credit Agreement	Jul. 13, 2011 Credit Agreement	Jul. 31, 2011 Amended Credit Facility	Mar. 31, 2012 Amended Credit Facility Year	Dec. 31, 2011 Amended Credit Facility	Jul. 13, 2011 Amended Credit Facility	Jul. 31, 2011 Amended Credit Facility Minimum	Jul. 31, 2011 Amended Credit Facility Maximum	Jul. 13, 2011 Amended Credit Facility Federal Funds Rate	Jul. 13, 2011 Amended Credit Facility One Month LIBOR	Jul. 13, 2011 Amended Credit Facility Bank Term Loan	Jul. 13, 2011 Eurocurrency loans Credit Agreement
Debt Instrument [Line Items]
Credit agreement, maximum borrowing capacity					$ 165,000,000							$ 265,000,000					$ 100,000,000
Credit agreement, agreement period												5 years
Credit agreement, maturity date	2014-11-23								2016-07-13
Reduction in interest costs												0.25%
Size of permitted acquisitions					25,000,000							100,000,000
Permitted additional indebtedness					20,000,000							120,000,000
Repayment of debt principal		1,500,000								1,300,000	22,500,000
Term loan debt										96,300,000
Revolving credit outstanding borrowings				100,000,000						25,000,000
Debt Instrument Lower Range Basis Spread On Variable Rate								0.75%							0.50%
Debt Instrument Higher Range Basis Spread On Variable Rate								1.50%								1.00%
Line of credit, interest rate description						The base reference rate will be the greater of the (1) prime rate; (2) federal funds effective rate plus 50 basis points; and (3) adjusted 1-month London interbank offered (“LIBO”) rate plus 100 basis points.
Line of credit, LIBOR rate, minimum spread																		1.75%
Line of credit, LIBOR rate, maximum spread																		2.50%
Unused commitment fee percentage													0.20%	0.35%
Covenants, leverage ratio							3.0
Capitalized debt issuance costs										100,000
Capitalized debt issuance costs, amortization period										4
Amount drawn on the line of credit to fund the acquisition of Curamik			145,000,000
Irrevocable standby letters of credit		1,100,000
Letter guarantee		900,000
Option to buy out capital lease, year		2013
Capital lease, expiration date		2021
Capital lease obligation		9,200,000
Interest expense on borrowing		800,000	1,100,000
Unused commitment fee paid		$ 100,000